That is quite good. In this case there is no need to modify ```example_group.rb``` at all.

This line here:
```ruby
config.patch_marshal_to_support_partial_doubles = false
```

against this line here #1433

```ruby
mocks.patch_marshal_to_support_partial_doubles = true
```

I understand that the one with ```false``` is the right one (because it disables patching of Marshal).